Hi,
The airport workers Jurgen, Manfred and Phillip are assigned to load luggage onto the aircraft. If Jurgen does the job alone he would need 4hrs 20mins. Manfred would need 5hrs 40mins to do it on his own, and Phillip 6hrs. How long does it take if they all load the aircraft together?
Is there a simple way to do this? (I have to work without a calculator) I tried setting Jurgen to 1.0, and then worked out the others relative to him, but it got quite messy.
The answer shown was 1hrs 45mins.
The airport workers Jurgen, Manfred and Phillip are assigned to load luggage onto the aircraft. If Jurgen does the job alone he would need 4hrs 20mins. Manfred would need 5hrs 40mins to do it on his own, and Phillip 6hrs. How long does it take if they all load the aircraft together?
Is there a simple way to do this? (I have to work without a calculator) I tried setting Jurgen to 1.0, and then worked out the others relative to him, but it got quite messy.
The answer shown was 1hrs 45mins.